QUOD ERAT DEMONSTRANDUMglossary / QUOD ERAT DEMONSTRANDUM QUOD ERAT DEMONSTRANDUMquod erat demonstrandum (kwod er-[schwa]t dem-[schwa]n-stran-d[schwa]m). See Q.E.D. Contributor Carl, Chinese legal translator, specializes in translating legal documents pertaining to complex business disputes.